Ediel Piña

非常感谢,我用这种方法解决了这个问题。

 <?php 
  $db = mysqli_connect("localhost", "root", "", "db");  
  $sql = "SELECT * FROM precios";  
  $result = mysqli_query($db, $sql);  
  while($row=mysqli_fetch_array($result, MYSQLI_ASSOC)){ 
?> 

<script type="text/javascript">
var websiteVars = {priceUsd: <?php echo ''.$row['priceUsd'].''?>, priceBS: <?php echo ''.$row['priceBS'].''?>}; 
<?php 
  } 
?> 

</script>